labelmain-demo/app/api/transfer/[path]/route.ts

import {
  handleDeleteCookie,
  handleLoginData,
  handleRefreshToken,
} from "@/components/login/libs/cookie"
import { genAccessToken } from "@/components/login/libs/session"
import { headers } from "next/headers"
import {
  // NextRequest,
  NextResponse,
} from "next/server"

const isParamsValid = (params: {} | null) =>
  params !== null && // 排除 null
  typeof params === "object" && // 确保是对象类型
  !Array.isArray(params) && // 排除数组（可选）
  Object.keys(params).length > 0 // 检查是否有自身可枚举属性

export async function POST(req: any) {
  try {
    const body = await req.json()

    let {
      url,
      data,
      options = {},
      method = "GET",
      isDownload = false,
      isLogin = false,
      isRefresh = false,
      isDeleteCookie = false,
      notJson = false,
    } = body
    if (isDeleteCookie) {
      await handleDeleteCookie()
      return new NextResponse(
        JSON.stringify({
          message: "Successfully delete cookie!",
          code: 200,
          status: true,
        }),
        {
          headers: {
            "Content-Type": "application/json",
          },
        }
      )
    }
    const userData = await genAccessToken(req)

    let fetchOptions: any = {}

    if (isRefresh) {
      if (!userData?.refresh_token) {
        return NextResponse.json(
          { message: "Refresh token is empty", code: 406 },
          { status: 200 }
        )
      }
      fetchOptions = {
        method,
        headers: {
          "content-type": "application/json",
        },
        body: JSON.stringify({
          token: userData?.refresh_token,
        }),
      }
    } else {
      const authorization = `bearer ${userData?.access_token}`
      fetchOptions = {
        method,
        headers: {
          "content-type": "application/json",
          authorization: authorization,
        },
      }
      if (method === "POST" || method === "PUT") {
        fetchOptions.body = data
      } else {
        if (isParamsValid(data)) {
          let test = ""
          for (const [key, value] of Object.entries(data)) {
            test += `&${key}=${value}`
          }
          url += `?${test}`
        }
      }
    }

    const isPrefixUrl = url.startsWith("http://") || url.startsWith("https://")

    const fetchUrl = isPrefixUrl ? url : `${process.env.NEXT_PUBLIC_URL}${url}`

    const res = await fetch(fetchUrl, fetchOptions)

    if (res?.status !== 200) {
      let error = ""
      if (res.headers.get("Content-Type")?.includes("application/json")) {
        const data = await res.json()
        error = data?.message || ""
      } else {
        error = await res.text()
      }
      return NextResponse.json({ message: error }, { status: res?.status })
    }

    if (
      options?.responseType === "blob" ||
      options?.responseType === "arraybuffer" ||
      isDownload
    ) {
      const blob = await res.blob()
      const buffer = await blob.arrayBuffer()
      return new NextResponse(buffer, {
        headers: {
          "Content-Type": blob.type,
          "x-real-name": res?.headers?.get("content-disposition") || "",
        },
      })
    } else if (!notJson) {
      try {
        const data = await (res.headers
          .get("Content-Type")
          ?.includes("application/json")
          ? res.json()
          : res.text())

        if (isLogin) {
          const header = await headers()
          let clientIP =
            header.get("x-forwarded-for")?.split(",")[0] ||
            req?.socket?.remoteAddress
          // ip v6地址
          if (clientIP.startsWith("::")) {
            clientIP = clientIP.slice(7)
          }
          const newData = await handleLoginData({
            clientIP: clientIP,
            fingerprint: body.fingerprint,
            data,
          })
          return new NextResponse(JSON.stringify(newData), {
            headers: {
              "Content-Type": "application/json",
            },
          })
        }
        if (isRefresh) {
          const newData = await handleRefreshToken({
            userData,
            data,
          })
          return new NextResponse(JSON.stringify(newData), {
            headers: {
              "Content-Type": "application/json",
            },
          })
        }
        return new NextResponse(JSON.stringify(data), {
          headers: {
            "Content-Type": "application/json",
          },
        })
      } catch (err) {
        return NextResponse.json({ error: err }, { status: 500 })
      }
    } else {
      return res
    }
  } catch (err) {
    return NextResponse.json({ error: err }, { status: 500 })
  }
}